Update README.md (#533)

Realized the README file still pointed at the Chan-Hoo user guide - another change to point at the rrfs-workflow version.

README.md

@@ -70,7 +70,7 @@ cd ..
 ```
 
 5. Configure/build the workflow (see description of Engineering Tests in the [RRFS-Workflow User's
-guide](https://chanhoo-rrfs-workflow.readthedocs.io/en/latest/index.html)
+guide](https://rrfs-workflow.readthedocs.io/en/latest/index.html)
 ## Disclaimer
 
 ```